Pretilachlor

Pretilachlor is a highly effective herbicide widely used in rice cultivation for controlling grassy weeds and broadleaf weeds. As a selective herbicide, Pretilachlor provides excellent weed control while ensuring crop safety when used as directed.

Product Specifications

• Chemical Name: 2-Chloro-2',6'-diethyl-N-(2-propoxyethyl)acetanilide
• Molecular Formula: C₁₇H₂₆ClNO₂
• CAS Number: 51218-49-6
• Appearance: Light yellow to brown viscous liquid
• Solubility: Slightly soluble in water, readily soluble in organic solvents
• Vapor Pressure: 1.1 × 10^-4 Pa (25°C)

Technical Parameters

Pretilachlor Application Guide

• Recommended Crops: Primarily used in rice fields (transplanted and direct-seeded)
• Target Weeds: Controls Echinochloa crus-galli, Cyperus difformis, Monochoria vaginalis, etc.
• Application Rate: 300-500 g a.i./ha (varies based on formulation and weed pressure)
• Application Timing: Pre-emergence to early post-emergence (1-3 days after transplanting)
• Water Management: Maintain 3-5 cm water depth for 5-7 days after application

Pretilachlor FAQ

Q: What is the mechanism of action of Pretilachlor?
A: Pretilachlor inhibits the synthesis of very long chain fatty acids (VLCFAs) in susceptible weeds by targeting the enzyme fatty acid elongase. This disruption in lipid biosynthesis prevents proper cell wall formation and ultimately leads to weed death.

Q: How long does Pretilachlor remain active in the soil?
A: The soil persistence of Pretilachlor depends on environmental conditions but typically lasts 4-6 weeks. Factors affecting degradation include soil moisture, temperature, microbial activity, and organic matter content. Under normal conditions, it degrades completely within 8-12 weeks.

Q: What safety precautions should be taken when handling Pretilachlor?
A: Always wear protective clothing, gloves, and eye protection when handling Pretilachlor. Avoid inhalation and direct skin contact. Wash hands thoroughly after use. Do not eat, drink, or smoke during application. In case of accidental exposure, follow first aid measures and seek medical attention if necessary.

Formulation Types

Benefits of Using Pretilachlor

• Provides excellent control of major rice weeds
• Long-lasting residual activity reduces need for multiple applications
• Highly selective to rice plants when used properly
• Flexible application timing (pre- to early post-emergence)
• Compatible with many other rice herbicides for tank mixing
• Economic weed control solution for rice farmers

Pretilachlor FAQ (Continued)

Q: Can Pretilachlor be used in other crops besides rice?
A: While Pretilachlor is primarily registered for use in rice, some formulations may be approved for use in other crops like wheat, barley, and certain vegetables in some countries. Always check local regulations and product labels before use in non-rice crops.

Q: What is the optimal water management for Pretilachlor application?
A: For best results, fields should be well-leveled with 3-5 cm standing water at application. Maintain this water depth for 5-7 days after application to ensure proper herbicide activation and distribution. Avoid drainage during this critical period.

Q: Are there any known resistance issues with Pretilachlor?
A: Some cases of weed resistance to Pretilachlor have been reported, particularly with Echinochloa crus-galli in areas of repeated use. To manage resistance, rotate with herbicides having different modes of action and integrate cultural weed control methods.

Environmental Profile

Storage and Handling

• Store in original container in a cool, dry, well-ventilated area
• Keep away from food, feed, and drinking water
• Protect from extreme temperatures and direct sunlight
• Do not store near incompatible materials (strong oxidizers)
• Keep containers tightly closed when not in use